Steel dam gate driven by hydraulic motor

Abstract

The application relates to the technical field of turnover steel dam gate, in particular to a steel dam gate driven by a hydraulic motor, which comprises a bottom horizontal shaft and gate leaves fixedly arranged along the length direction of the bottom horizontal shaft, both ends of the bottom horizontal shaft are provided with opening and closing chambers, both ends of the bottom horizontal shaft extend into the corresponding opening and closing chambers and are fixedly arranged with output shafts of the hydraulic motor, and the bottom horizontal shaft is rotationally connected with the two opening and closing chambers. The bottom horizontal shaft, the gate leaves and the gate plate are arranged, when the steel dam gate is in an open state during use of the device, the gate leaves are in a horizontal state, the gate plate moves upwards at this moment and is in an open state, that is, the gap between the gate plate and the bottom plate is unsealed, water from the upstream normally passes above the gate leaves and also passes through the gap between the bottom horizontal shaft and the bottom plate, so that the silt accumulated at the position where the back side of the gate plate contacts the bottom plate is washed away by the water flow, and the function of dredging is realized when the steel dam gate is in an open state.

Description

Technical Field

[0001] This application relates to the field of tilting steel dam gates and related technologies, and in particular to a steel dam gate driven by a hydraulic motor. Background Technology

[0002] Steel dam gates are mechanical devices used in water conservancy and hydropower engineering facilities. They are mainly used in agricultural irrigation, fisheries, ship locks, seawater tide control, urban river landscape projects, and small hydropower stations. A typical steel dam gate is a new type of gate that uses hydraulic equipment, such as a hydraulic motor, to drive the bottom horizontal shaft to rotate, thus opening and closing the gate. It has advantages such as rapid opening and closing and durability. It mainly consists of a bottom horizontal shaft, steel gate leaves, and a hoisting mechanism (hydraulic motor) installed inside the gate chamber. The steel gate leaves are connected to the bottom horizontal shaft to form the gate. The two ends of the bottom horizontal shaft pass through the walls of the gate chamber built on both banks of the river and connect to the hoisting mechanism inside the gate chamber. The bottom horizontal shaft is fixed to the foundation by bearing seats and rotates under the drive of the hoisting mechanism. Driven by the bottom horizontal shaft, the gate swings, realizing the opening and closing functions.

[0003] A search revealed patent number CN103485313A, entitled "A Closed Steel Dam Gate," which discloses the following technical solution: a bottom horizontal shaft, a steel dam gate leaf, and a hoist installed inside the gate chamber. The bottom horizontal shaft passes through the gate chamber wall at both ends and connects to the hoist, rotating under its drive. The steel dam gate leaf connects to the bottom horizontal shaft to form a gate. A sealing component is provided at the position where the side of the steel dam gate leaf contacts the gate chamber wall. This sealing component includes a fixed seat and a sealing strip. The fixed seat is installed on the side of the steel dam gate leaf, while the sealing strip is located at the outer end of the fixed seat and close to the gate chamber wall. A spring or spring cylinder is also provided on the fixed seat to press against the sealing strip, creating an interference fit between the sealing strip and the gate chamber wall. Two Y-shaped sealing rings are provided parallel to each other at the positions where the bottom horizontal shaft passes through the gate chamber wall. This invention ensures a good sealing effect for the steel dam gate even if the bottom horizontal shaft is misaligned or the gate chamber wall is uneven.

[0004] In the above technical solution, several bearings are installed on the bottom horizontal axis between the two gate chambers. The bearing seats are fixed to the foundation, forming a gap between the bottom horizontal axis and the foundation. Although the above solution does not describe the technical solution for handling this gap, it is known from the literature that the gap between the bottom horizontal axis and the foundation is generally sealed by pouring concrete to form a seal and play a role in blocking water. However, in use, due to the concrete seal, a large amount of mud and sand often accumulates at the bottom of the rear side of the gate leaf. Therefore, after the steel dam gate has been used for a long time, it is necessary to clean the mud and sand at the bottom of the rear side of the gate leaf regularly, which is time-consuming and laborious. Summary of the Invention

[0005] To address the problem, this application provides a steel dam gate driven by a hydraulic motor, employing the following technical solution:

[0006] A steel dam gate driven by a hydraulic motor includes a bottom horizontal shaft and gate leaves fixedly arranged along the length of the bottom horizontal shaft. Both ends of the bottom horizontal shaft are provided with opening and closing chambers, extending into the corresponding opening and closing chambers and fixedly connected to the output shaft of the hydraulic motor. Both ends of the bottom horizontal shaft are rotatably connected to the two opening and closing chambers respectively. Several bearing seats are rotatably connected to the bottom horizontal shaft located between the two opening and closing chambers. The lower end face of each bearing seat is fixedly connected to a base plate located below the bottom horizontal shaft. Gate plates are slidably arranged on both sides of each bearing seat in the vertical direction. The gate plate between each pair of adjacent bearing seats is tightly fitted with the corresponding bearing seat, and the gate plates on both sides are tightly fitted with the corresponding bearing seat and the opening and closing chamber.

[0007] When the gate is opened, the hydraulic motor rotates, causing the bottom horizontal shaft to rotate 90 degrees forward. This, in turn, rotates the gate leaf 90 degrees forward, bringing it to a horizontal position, thus opening the gate. The area behind the gate leaf is upstream, and the area in front is downstream. Water from upstream flows downstream through the horizontal gate leaf. When the gate is closed, the hydraulic motor rotates, causing the bottom horizontal shaft to rotate 90 degrees backward. This, in turn, rotates the gate leaf 90 degrees backward, bringing it to a vertical position, thus closing the gate and blocking upstream water. When the steel dam gate is closed, the gate leaf is vertical, and the lower end of the gate plate is aligned with the upper end of the bottom plate. The end face contact seals the gap between the bottom horizontal shaft and the bottom plate, achieving the function of water blocking. In this state, while blocking water, silt will also accumulate at the contact point between the gate plate and the bottom plate. When the steel dam gate is in the open state, the gate leaf is in a horizontal state. At this time, the gate moves upward and is in the open state. That is, the seal between the gate plate and the bottom plate is released. Water from upstream passes normally through the top of the gate leaf and also through the gap between the bottom horizontal shaft and the bottom plate. This allows the water flow to wash away the silt accumulated at the contact point between the gate plate and the bottom plate, thus achieving the function of dredging when the steel dam gate is in the open state.

[0008] Optionally, a downwardly inclined drive rod is provided on the bottom horizontal axis corresponding to the gate plate, and the drive rod passes through the corresponding gate plate.

[0009] When the gate is opened, the bottom horizontal shaft rotates 90 degrees forward, which in turn causes the gate leaf to flip 90 degrees forward, making the gate leaf horizontal and thus achieving the purpose of opening the gate. At the same time, the bottom horizontal shaft drives the drive rod to rotate 90 degrees synchronously. As the drive rod rotates, it causes the gate to move upward, thus releasing the seal between the bottom horizontal shaft and the bottom plate. In addition, when the drive rod rotates and causes the gate to move upward, the drive rod will also extend further relative to the rear side of the gate, resulting in relative movement between the drive rod and the gate.

[0010] Optionally, a through hole adapted to the drive rod is provided on the gate plate at the position corresponding to the drive rod, and one end of the through hole on the front side of the gate plate is larger than the end of the through hole on the rear side of the gate plate along the height direction of the gate plate.

[0011] When the bottom horizontal shaft rotates, it drives the drive rod to rotate. When the drive rod drives the gate to move upward, the angle between the drive rod and the gate will change. This causes the rod body to move along the height direction of the gate in the end of the through hole located on the front side of the gate. At the same time, when the drive rod rotates and drives the gate to move upward, the drive rod will also extend longer relative to the rear side of the gate.

[0012] Optionally, an arc groove is provided at the position corresponding to the drive rod on the bottom horizontal shaft. The inner bottom wall of the arc groove is parallel to the outer surface of the bottom horizontal shaft. The complementary angle of the arc groove's fan-shaped angle and the angle between the drive rod and the base plate are equal. Guide rails parallel to the inner bottom wall of the arc groove are fixedly provided in the middle section of the inner side walls on both sides of the arc groove. Guide grooves adapted to the guide rails are provided on both the left and right sides of the drive rod. The drive rod is slidably connected to the bottom horizontal shaft through the guide rails and guide grooves.

[0013] Due to the limitations of the guide rail, the drive rod rotates around the central axis of the bottom horizontal shaft when sliding within the arc groove. During operation, when the gate is opened, the bottom horizontal shaft rotates 90 degrees forward, causing the gate leaf to rotate 90 degrees forward and reach a horizontal position. Simultaneously, the rotation of the bottom horizontal shaft drives the gate plate upward via the drive rod. When the bottom horizontal shaft begins to rotate, the drive rod slides within the arc groove due to the weight of the gate plate until its tip reaches the bottom of the groove. At this point, the drive rod is restricted by the bottom of the groove and stops sliding. As the bottom horizontal shaft continues to rotate, the drive rod drives the gate plate upward. When the bottom horizontal shaft rotates 90 degrees, the drive rod is exactly at a horizontal position, and the gate plate has also moved upward a set distance. Water from upstream flows over the gate leaf and through the gap between the gate plate and the bottom plate, carrying away the silt accumulated at the contact point between the gate plate and the bottom plate, thus achieving simultaneous silt removal with each gate opening. When the gate is closed, the bottom horizontal shaft rotates 90 degrees rearward, causing the gate leaf to rotate 90 degrees rearward and be in a vertical position. Simultaneously, the rotation of the bottom horizontal shaft drives the gate plate downward via the drive rod. When the bottom horizontal shaft begins to rotate, the weight of the gate plate may cause it to drive the drive rod downward until the lower end of the gate plate contacts the upper end of the base plate. At this point, the gate plate stops moving downward. The bottom horizontal shaft continues to rotate, but the drive rod, blocked by the gate plate, slides its tip within the arc groove until it reaches the rearmost point. At this point, the bottom horizontal shaft rotates 90 degrees. When the gate is closed, the drive rod undergoes a second movement: as the bottom horizontal shaft begins to rotate rearward, the tip of the drive rod slides within the arc groove until it reaches the top of the arc groove. The bottom horizontal shaft continues to rotate, and the drive rod stops sliding, thus driving the gate plate downward until the lower end of the gate plate contacts the base plate. At this point, the bottom horizontal shaft has rotated exactly 90 degrees.

[0014] Optionally, a groove is fixedly provided on the upper surface of the base plate at the position corresponding to the gate. When the gate moves downward to contact the base plate, the lower end surface of the gate is located in the groove.

[0015] This achieves a better watertight seal between the gate and the base plate, preventing water from flowing through the gap between the gate and the base plate when the gate is closed.

[0016] Optionally, a channel with a length equal to that of the gate in the left-right direction is opened on the inner bottom wall of the tank at the position corresponding to the gate. A guide rod is fixedly installed on the lower end face of each gate, and a baffle with a length equal to that of the gate in the left-right direction is fixedly installed at the bottom end of each guide rod.

[0017] When the gate moves upward, the guide rod synchronously drives the baffle to move upward. When the gate moves upward to its position, the upper end of the baffle is flush with the upper end of the channel. At this time, when the upstream river water passes between the gate and the channel, the silt it carries will not enter the channel, ensuring that the silt can completely enter the channel when the gate moves downward next time.

[0018] Optionally, a receiving cavity is fixedly provided on the lower end face of the base plate at the position corresponding to the baffle. The interior of the receiving cavity and the base plate form a sealed chamber. A channel of the same size as the channel is opened on the base plate.

[0019] When the gate moves downward, the gate moves downward through the guide rod, causing the baffle to move downward. The baffle passes through the channel of the trough and the hole in the bottom plate and enters the sealed chamber inside the receiving cavity.

[0020] Optionally, a sludge container is fixedly installed on the upper surface of the bottom plate located at the rear side of the tank. Several parallel circular grooves are opened on the upper surface of the sludge container along the left and right direction. Each circular groove is equipped with a sludge removal mechanism. The sludge removal mechanism includes a rotating shaft that is rotatably connected to both opening and closing chambers. Several stirring bodies are evenly arranged on the rotating shaft. The sludge removal mechanism also includes a drive device located in the opening and closing chamber. The drive end of the drive device passes through the opening and closing chamber and is fixedly installed with the rotating shaft.

[0021] When the gate is opened, the bottom horizontal shaft drives the gate leaf to rotate 90 degrees forward. At the same time, the bottom horizontal shaft drives the gate plate to move upward through the drive rod. As the upstream river water flows over the gate leaf, some of the river water flows through the gap between the gate plate and the trough. This allows the river water flowing through the gap between the gate plate and the trough to carry away the silt located in the silt container at the back of the trough. At this time, the drive device drives the rotating shaft to rotate, and the rotating shaft drives the agitator to rotate. This causes the agitator to stir up the silt stuck in the circular trough of the silt container, making it easier for the river water to carry it downstream, thus achieving a better purpose of dredging.

[0022] Optionally, a first contact is fixedly provided on the outer surface of the bottom horizontal shaft located in the opening and closing chamber, and a second contact is fixedly provided on the inner side wall of the opening and closing chamber.

[0023] When the bottom horizontal shaft drives the gate leaf to rotate 90 degrees forward to open the gate, the bottom horizontal shaft also drives the first contact to rotate 90 degrees, which makes contact with the second contact. The drive device circuit is then connected, the drive device starts, and drives the sludge removal mechanism to perform sludge removal. When the bottom horizontal shaft drives the gate leaf to rotate 90 degrees backward to close the gate, the bottom horizontal shaft also drives the first contact to rotate 90 degrees, which disengages from the second contact, and the drive device stops.

[0024] Optionally, a cover is fixedly installed on the rear side of the gate, and the drive rod passes through the through hole of the gate and enters the cover.

[0025] The through-hole is sealed at one end of the gate located on the rear side of the gate by means of a cover.

[0026] In summary, this application includes the following beneficial technical effects:

[0027] I. This application, by setting a bottom horizontal shaft, gate leaf, and gate plate, ensures that when the steel dam gate is in the open state, the gate leaf is horizontal, and the gate plate moves upward, thus being in the open state.

[0028] When the seal between the gate and the bottom plate is released, water from upstream passes normally through the top of the gate leaf and also through the gap between the bottom horizontal shaft and the bottom plate. This allows the water flow to wash away the silt accumulated at the contact point between the gate and the bottom plate, thus achieving the function of dredging while the steel dam gate is open.

[0029] Second, furthermore, by setting up a bottom horizontal shaft, a gate leaf, a gate plate, and a drive rod, when the device is in use, the bottom horizontal shaft rotates 90 degrees forward when the gate is opened, thereby causing the gate leaf to rotate 90 degrees forward, so that the gate leaf is in a horizontal state, thus achieving the purpose of opening the gate. At the same time, the bottom horizontal shaft drives the drive rod to rotate 90 degrees synchronously. As the drive rod rotates, it drives the gate plate to move upward, thereby releasing the seal between the bottom horizontal shaft and the bottom plate, thus achieving the purpose of lifting the gate plate when the gate is opened. Attached Figure Description

[0030] Figure 1 is a schematic diagram of the overall three-dimensional structure in an embodiment of this application;

[0031] Figure 2 is a front view of the structure in an embodiment of this application;

[0032] Figure 3 is a schematic diagram of the three-dimensional structure of the cover in an embodiment of this application;

[0033] Figure 4 is a three-dimensional structural schematic diagram of the dredging mechanism in an embodiment of this application;

[0034] Figure 5 is a three-dimensional structural diagram of the sludge container in an embodiment of this application;

[0035] Figure 6 is a three-dimensional structural diagram of the gate being lifted upwards when the gate is opened in an embodiment of this application;

[0036] Figure 7 is a three-dimensional structural diagram of the accommodating cavity in an embodiment of this application;

[0037] Figure 8 is a three-dimensional structural diagram of the tank and the opening / closing chamber in an embodiment of this application;

[0038] Figure 9 is a top view of the tank structure in an embodiment of this application;

[0039] Figure 10 is a three-dimensional structural diagram of the drive rod in an embodiment of this application;

[0040] Figure 11 is a three-dimensional structural diagram of the through hole on the front side of the gate in an embodiment of this application;

[0041] Figure 12 is a three-dimensional structural diagram of the through hole on the rear side of the gate in an embodiment of this application;

[0042] Figure 13 is a magnified schematic diagram of a partial structure in an embodiment of this application.

[0043] Reference numerals: 1. Bottom horizontal shaft; 2. Door leaf; 3. Opening and closing chamber; 4. Hydraulic motor; 5. Bearing seat; 6. Base plate; 7. Gate plate; 8. Drive rod; 9. Through hole; 10. Cover; 11. Arc groove; 12. Guide rail; 13. Groove; 14. Channel; 15. Guide rod; 16. Baffle; 17. Receiving cavity; 18. Sludge receiving body; 19. Circular groove; 20. Rotating shaft; 21. Agitator; 22. Drive device; 23. First contact point; 24. Restriction bar; 25. Slide rail; 26. Slide groove; 27. Light. Detailed Implementation

[0044] The present application will be further described in detail below with reference to Figures 1-13.

[0045] This application discloses a steel dam gate driven by a hydraulic motor, including a bottom horizontal shaft 1 and a gate leaf 2 fixedly arranged along the length of the bottom horizontal shaft 1. Both ends of the bottom horizontal shaft 1 are provided with opening and closing chambers 3, and both ends of the bottom horizontal shaft 1 extend into the corresponding opening and closing chambers 3 and are fixedly arranged with the output shaft of the hydraulic motor 4. Both ends of the bottom horizontal shaft 1 are rotatably connected to the two opening and closing chambers 3 respectively. A plurality of bearing seats 5 are rotatably connected on the bottom horizontal shaft 1 located between the two opening and closing chambers 3. The lower end face of each bearing seat 5 is fixedly connected to the bottom plate 6 arranged below the bottom horizontal shaft 1.

[0046] When the gate is opened, the hydraulic motor 4 rotates, causing the bottom horizontal shaft 1 to rotate 90 degrees forward. The bottom horizontal shaft 1 then rotates the gate leaf 2 90 degrees forward, making the gate leaf 2 horizontal, thus achieving the purpose of opening the gate. The rear side of the gate leaf 2 is upstream, and the front side is downstream. The upstream water flows to the downstream through the horizontal gate leaf 2. When the gate is closed, the hydraulic motor 4 rotates, causing the bottom horizontal shaft 1 to rotate 90 degrees backward. The bottom horizontal shaft 1 then rotates the gate leaf 2 90 degrees backward, making the gate leaf 2 vertical, thus achieving the purpose of closing the gate. The upstream water is blocked.

[0047] Because the bottom horizontal shaft 1 of the steel dam gate is supported by multiple bearing seats 5, there will be a gap between the bottom horizontal shaft 1 and the bottom plate 6. The existing technology solves this problem by pouring concrete into the gap between the bottom horizontal shaft 1 and the bottom plate 6, allowing the concrete to solidify and seal the gap, thus achieving the function of blocking water. However, during use, a large amount of mud and sand often accumulates at the bottom of the rear side of the gate leaf 2 due to the concrete sealing. Therefore, after the steel dam gate has been in use for a long time, it is necessary to clean the mud and sand at the bottom of the rear side of the gate leaf 2 regularly, which is time-consuming and labor-intensive.

[0048] To address the aforementioned issues, in this embodiment, each bearing seat 5 is slidably equipped with a gate plate 7 on both sides in the vertical direction. The gate plate 7 between any two adjacent bearing seats 5 is tightly fitted with the corresponding bearing seat 5, and the gate plates 7 on both sides are tightly fitted with the corresponding bearing seat 5 and the opening / closing chamber 3. When the steel dam gate is closed, the gate leaf 2 is vertical, and the lower end face of the gate plate 7 contacts the upper end face of the bottom plate 6, sealing the gap between the bottom horizontal shaft 1 and the bottom plate 6, thus achieving the function of blocking water. In this state, while blocking water, silt will also accumulate at the position where the gate plate 7 contacts the bottom plate 6. When the steel dam gate is open, the gate leaf 2 is horizontal, and the gate plate 7 moves upward and is in the open state. That is, the seal between the gate plate 7 and the bottom plate 6 is released, and water from upstream passes normally through the top of the gate leaf 2, while also passing through the gap between the bottom horizontal shaft 1 and the bottom plate 6. The gap between them allows the water flow to wash away the silt and sand accumulated at the contact point between the back of the gate 7 and the bottom plate 6, thus enabling the steel dam gate to have a dredging function while in the open state.

[0049] To increase the smoothness of the gate plate 7 moving up and down, in this embodiment, limiting strips 24 are fixedly provided on both the left and right sides of the bearing seat 5. Each limiting strip 24 is fixedly provided with a slide rail 25 on the side near the gate plate 7. Each gate plate 7 has a sliding groove 26 that matches the slide rail 25 in the vertical direction on the left and right sides corresponding to the slide rail 25. The gate plate 7 is slidably connected to the corresponding limiting strip 24 in the vertical direction through the slide rail 25 and the sliding groove 26. When the gate plate 7 moves up and down, it slides up and down in the corresponding sliding groove 26 through the slide rail 25, which increases the smoothness of the gate plate 7 sliding up and down.

[0050] To ensure that the gate plate 7 can be lifted simultaneously when the gate is opened, in this embodiment, a downwardly inclined drive rod 8 is provided on the bottom horizontal shaft 1 corresponding to the gate plate 7. The drive rod 8 passes through the corresponding gate plate 7. When the gate is opened, the bottom horizontal shaft 1 rotates 90 degrees forward, thereby causing the gate leaf 2 to rotate 90 degrees forward, so that the gate leaf 2 is in a horizontal state, thus achieving the purpose of opening the gate. At the same time, the bottom horizontal shaft 1 drives the drive rod 8 to rotate 90 degrees synchronously. As the drive rod 8 rotates, it drives the gate plate 7 to move upward, thereby releasing the seal between the bottom horizontal shaft 1 and the bottom plate 6. In addition, when the drive rod 8 rotates and drives the gate plate 7 to move upward, the drive rod 8 will also extend further relative to the rear side of the gate plate 7, and the drive rod 8 and the gate plate 7 will move relative to each other.

[0051] To ensure that the rotation of the drive rod 8 does not interfere with the linear movement of the gate 7 when it rotates and drives the gate 7 to move upward or downward, in this embodiment, a through hole 9 is provided on the gate 7 at a position corresponding to the drive rod 8. The end of the through hole 9 on the front side of the gate 7 is longer than the end of the through hole 9 on the rear side of the gate 7 along the height direction of the gate 7. When the bottom horizontal shaft 1 rotates and drives the drive rod 8 to rotate, the angle between the drive rod 8 and the gate 7 will change when the drive rod 8 drives the gate 7 to move upward. This causes the rod body of the drive rod 8 to move along the height direction of the gate 7 within the end of the through hole 9 located on the front side of the gate 7. At the same time, when the drive rod 8 rotates and drives the gate 7 to move upward, the drive rod 8 will also extend longer relative to the rear side of the gate 7.

[0052] Since the gate plate 7 has a through hole 9, when the gate plate 7 moves downward and contacts the bottom plate 6 to achieve a seal between the bottom horizontal shaft 1 and the bottom plate 6, the water upstream may flow downstream through the through hole 9. In order to solve this problem, in this embodiment, a cover 10 is fixedly provided on the rear side of the gate plate 7. The drive rod 8 passes through the through hole 9 of the gate plate 7 and enters the cover 10. The cover 10 is used to seal the end of the through hole 9 located on the rear side of the gate plate 7.

[0053] If the drive rod 8 is positioned perpendicular to the base plate 6 on the bottom horizontal shaft 1, then when the bottom horizontal shaft 1 rotates forward 90 degrees to open the gate, the drive rod 8 will rotate 90 degrees along with the bottom horizontal shaft 1. At this time, the drive rod 8 is in a horizontal state, and its height will not exceed the upper surface of the horizontal gate leaf 2, thus not affecting the normal use of the steel dam gate. However, in the above scheme, the drive rod 8 is inclined downwards. Therefore, when the bottom horizontal shaft 1 rotates forward 90 degrees to open the gate, the drive rod 8 is in an upward-inclined state, which has an adverse effect on the use of the steel dam gate. To solve this problem, in this embodiment, an arc groove 11 is provided at the position corresponding to the drive rod 8 on the bottom horizontal shaft 1. The inner bottom wall of the arc groove 11 is parallel to the outer surface of the bottom horizontal shaft 1. The complementary angle of the fan-shaped angle of the arc groove 11 and the angle between the drive rod 8 and the base plate 6 are equal. The middle sections of the inner sidewalls on both sides of the arc groove 11 are fixedly provided with arc groove 11. The guide rail 12 is parallel to the inner bottom wall. Guide grooves matching the guide rail 12 are provided on both the left and right sides of the drive rod 8. The drive rod 8 is slidably connected to the bottom horizontal shaft 1 through the guide rail 12 and the guide grooves. Due to the constraint of the guide rail 12, the drive rod 8 will rotate around the central axis of the bottom horizontal shaft 1 when sliding within the arc groove 11. In use, when the gate is opened, the bottom horizontal shaft 1 rotates 90 degrees forward, causing the gate leaf 2 to rotate 90 degrees forward and be in a horizontal position. Simultaneously, the rotation of the bottom horizontal shaft 1 drives the gate plate 7 upward through the drive rod 8. When the bottom horizontal shaft 1 begins to rotate, due to the weight limitation of the gate plate 7, the drive rod 8 will slide within the arc groove 11 until the top of the drive rod 8 reaches the bottom end of the arc groove 11. At this point, the drive rod 8 is restricted by the bottom end of the arc groove 11 and no longer slides. As the bottom horizontal shaft 1 continues to rotate, the drive rod 8 will drive the gate plate 7 upward. When the bottom horizontal shaft 1… When rotated 90 degrees, the drive rod 8 is in a horizontal position. At this time, the gate 7 also moves upward by a set distance. The water from upstream flows over the top of the gate leaf 2 and also flows through the gap between the gate 7 and the bottom plate 6. This allows the water flow to carry away the silt accumulated on the rear side of the gate 7 at the contact point with the bottom plate 6, thus achieving the purpose of clearing silt at the same time each time the gate is opened.When the gate is closed, the bottom horizontal shaft 1 rotates 90 degrees to the rear, causing the gate leaf 2 to rotate 90 degrees to the rear and be in a vertical position. Simultaneously, the rotation of the bottom horizontal shaft 1 drives the gate plate 7 downwards via the drive rod 8. When the bottom horizontal shaft 1 begins to rotate, due to the weight of the gate plate 7, it may drive the drive rod 8 downwards until the lower end face of the gate plate 7 contacts the upper end face of the bottom plate 6. At this point, the gate plate 7 stops moving downwards, and the bottom horizontal shaft 1 continues to rotate. Because of the obstruction of the gate plate 7, the top of the drive rod 8 will slide within the arc groove 11 until the top of the drive rod 8 reaches the rearmost point. At this point, the bottom horizontal shaft 1 has rotated exactly 90 degrees. When the gate is closed, the second movement of the drive rod 8 occurs: when the bottom horizontal shaft 1 begins to rotate to the rear, the top of the drive rod 8 slides within the arc groove 11 until the top of the drive rod 8 reaches the top of the arc groove 11. At this point, the bottom horizontal shaft 1... As rotation continues, the drive rod 8 will no longer slide, thus driving the gate 7 to move downwards until the lower end face of the gate 7 contacts the base plate 6. At this point, the bottom horizontal shaft 1 has rotated exactly ninety degrees.

[0054] To ensure a watertight seal between the gate 7 and the base plate 6 when the gate 7 is in the bottom position, in this embodiment, a groove 13 is fixedly provided on the upper surface of the base plate 6 at the position corresponding to the gate 7. When the gate 7 moves downward to contact the base plate 6, the lower surface of the gate 7 is located in the groove 13, achieving a better watertight seal between the gate 7 and the base plate 6 and preventing water from flowing through the gap between the gate 7 and the base plate 6 when the gate is closed.

[0055] Because of the presence of the trough 13, silt will accumulate at the contact point between the rear side of the trough 13 and the bottom plate 6 during the use of this device. When the gate 7 moves upward, and the upstream water flows through the gap between the gate 7 and the trough 13 to achieve the silt removal function, silt may enter the trough 13. When the gate 7 moves downward next time, it will not be able to completely enter the trough 13 because of the silt inside. To solve this problem, in this embodiment, a channel 14 with a length equal to the left and right direction of the gate 7 is opened on the inner bottom wall of the trough 13 at the position corresponding to the gate 7. A guide rod 15 is fixedly installed on the lower end face of each gate 7, and a baffle 16 with a length equal to the left and right direction of the gate 7 is fixedly installed at the bottom end of each guide rod 15. When the gate 7 moves upward, the baffle 16 is driven upward synchronously through the guide rod 15. When the gate 7 moves upward to the correct position, the upper end face of the baffle 16 is exactly in contact with the trough 13. The upper surface is flush with the gate. When the upstream river water passes between the gate 7 and the trough 13, the silt it carries will not enter the trough 13, ensuring that the gate 7 can completely enter the trough 13 when it moves downward next time.

[0056] Since the lower end face of the base plate 6 is in contact with the riverbed, the guide rod 15 and the baffle 16 will pass through the base plate 6 and enter the riverbed when they move downward. To solve this problem, in this embodiment, a receiving cavity 17 is fixedly provided at the position corresponding to the baffle 16 on the lower end face of the base plate 6. The interior of the receiving cavity 17 and the base plate 6 form a sealed chamber. The base plate 6 has a hole of the same size as the channel 14. When the gate 7 moves downward, the gate 7 drives the baffle 16 to move downward through the guide rod 15. The baffle 16 will pass through the channel 14 of the trough 13 and the hole of the base plate 6 and enter the sealed chamber in the receiving cavity 17.

[0057] Because of the presence of the trough 13, which has a set height, the upstream river water flows through the gap between the gate 7 and the trough 13 by moving the gate plate 7 upward. During dredging, some silt is blocked by the trough 13 and remains at the position where the rear side of the trough 13 contacts the bottom plate 6. To solve this problem, in this embodiment, a silt container 18 is fixedly installed on the upper surface of the bottom plate 6 located on the rear side of the trough 13. The upper surface of the silt container 18 has several parallel circular grooves 19 along the left-right direction. Each circular groove 19 contains a dredging mechanism. The dredging mechanism includes a rotating shaft 20 rotatably connected to both opening and closing chambers 3. Several stirring bodies 21 are evenly arranged on the rotating shaft 20. The dredging mechanism also includes a drive device 22 located inside the opening and closing chambers 3. The drive end of the drive device 22 passes through the opening and closing chambers 3 and is fixedly installed with the rotating shaft 20. When the gate is opened, the bottom horizontal shaft 1 drives the gate leaf 2. The gate rotates 90 degrees forward, and at the same time, the bottom horizontal shaft 1 drives the gate plate 7 to move upward through the drive rod 8. As the upstream river water flows over the gate leaf 2, some of the river water flows through the gap between the gate plate 7 and the trough 13. This allows the river water flowing through the gap between the gate plate 7 and the trough 13 to carry away the silt located in the silt container 18 behind the trough 13. At this time, the drive device 22 drives the rotating shaft 20 to rotate, and the rotating shaft 20 drives the stirring body 21 to rotate. This causes the stirring body 21 to stir up the silt stuck in the circular groove 19 of the silt container 18, making it easier for the river water to carry it downstream, thus achieving a better dredging purpose.

[0058] To achieve the goal of starting the drive device 22 when opening the gate and stopping the drive device 22 when closing the gate, in this embodiment, a first contact 23 is fixedly installed on the outer surface of the bottom horizontal shaft 1 located in the opening and closing chamber 3, and a second contact is fixedly installed on the inner wall of the opening and closing chamber 3. When the bottom horizontal shaft 1 drives the gate leaf 2 to rotate 90 degrees forward to open the gate, the bottom horizontal shaft 1 simultaneously drives the first contact 23 to rotate 90 degrees, which just makes contact with the second contact. The circuit of the drive device 22 is connected, the drive device 22 starts, and drives the sludge removal mechanism to perform sludge removal. When the bottom horizontal shaft 1 drives the gate leaf 2 to rotate 90 degrees backward to close the gate, the bottom horizontal shaft 1 simultaneously drives the first contact 23 to rotate 90 degrees, which disengages from the second contact, and the drive device 22 stops.

[0059] To serve as a warning, each opening and closing chamber 3 is equipped with a light 27 on its upper surface. At night, the light 27 is turned on to serve as a warning to the waterway.

[0060] The working principle of this invention is as follows: When the gate is opened, the hydraulic motor 4 rotates, causing the bottom horizontal shaft 1 to rotate 90 degrees forward. The bottom horizontal shaft 1 then rotates the gate leaf 2 90 degrees forward, making the gate leaf 2 horizontal, thus achieving the purpose of opening the gate. The rear side of the gate leaf 2 is upstream, and the front side is downstream, allowing water to flow from upstream to downstream. When the gate is closed, the hydraulic motor 4 rotates, causing the bottom horizontal shaft 1 to rotate 90 degrees backward. The bottom horizontal shaft 1 then rotates the gate leaf 2 90 degrees backward, making the gate leaf 2 vertical, thus achieving the purpose of closing the gate, blocking the upstream water. When the gate is opened, the bottom horizontal shaft 1 rotates 90 degrees forward, causing the gate leaf 2 to rotate 90 degrees forward and become horizontal. Simultaneously, the rotation of the bottom horizontal shaft 1 drives the gate plate 7 upward via the drive rod 8. When the bottom horizontal shaft 1 begins to rotate, due to the weight limitation of the gate plate 7, the drive rod 8 will slide within the arc groove 11 until the top of the drive rod 8 reaches the arc groove 11. At the bottom end, the drive rod 8 is restricted from moving by the bottom end of the arc groove 11. As the bottom horizontal shaft 1 continues to rotate, the drive rod 8 will drive the gate plate 7 to move upward. When the bottom horizontal shaft 1 rotates ninety degrees, the drive rod 8 is exactly in a horizontal position. At this time, the gate plate 7 also moves upward by a set distance. The upstream water flows over the gate leaf 2 and also flows through the gap between the gate plate 7 and the trough 13, so that the water flow carries away the silt accumulated at the contact position between the rear side of the gate plate 7 and the bottom plate 6, achieving the purpose of clearing silt at the same time each time the gate is opened. When the gate plate 7 moves upward, the guide rod 15 drives the baffle 16 to move upward. When the gate plate 7 moves upward to the position, the upper end face of the baffle 16 is exactly flush with the upper end face of the trough 13. At this time, when the upstream river water passes between the gate plate 7 and the trough 13, the silt carried will not enter the trough 13, ensuring that the gate plate 7 will be cleared next time. When moving downwards, it can fully enter the tank 13.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A steel dam gate driven by a hydraulic motor, comprising a bottom horizontal shaft (1) and gate leaves (2) fixedly arranged along the length direction of the bottom horizontal shaft (1), characterized in that: Both ends of the bottom horizontal shaft (1) are provided with opening and closing chambers (3). Both ends of the bottom horizontal shaft (1) extend into the corresponding opening and closing chambers (3) and are fixedly connected to the output shaft of the hydraulic motor (4). Both ends of the bottom horizontal shaft (1) are rotatably connected to the two opening and closing chambers (3) respectively. Several bearing seats (5) are rotatably connected on the bottom horizontal shaft (1) between the two opening and closing chambers (3). The lower end face of each bearing seat (5) is fixedly connected to the bottom plate (6) provided below the bottom horizontal shaft (1). Each bearing seat (5) has a gate (7) slidably mounted on both sides in the up-down direction. The gate (7) between each two adjacent bearing seats (5) is tightly fitted with the corresponding bearing seat (5). The gates (7) on both sides are tightly fitted with the corresponding bearing seat (5) and the opening and closing chamber (3).

2. The steel dam gate driven by a hydraulic motor according to claim 1, characterized in that: A downwardly inclined drive rod (8) is provided on the bottom horizontal shaft (1) corresponding to the gate plate (7), and the drive rod (8) passes through the corresponding gate plate (7).

3. The steel dam gate driven by a hydraulic motor according to claim 2, characterized in that: The gate (7) has a through hole (9) that is compatible with the drive rod (8) at the position corresponding to the drive rod (8). One end of the through hole (9) on the front side of the gate (7) is larger than the end of the through hole (9) on the rear side of the gate (7) along the height direction of the gate (7).

4. The steel dam gate driven by a hydraulic motor according to claim 3, characterized in that: An arc groove (11) is provided at the position corresponding to the drive rod (8) of the bottom horizontal shaft (1). The inner bottom wall of the arc groove (11) is parallel to the outer surface of the bottom horizontal shaft (1). The complementary angle of the fan-shaped angle of the arc groove (11) and the angle between the drive rod (8) and the base plate (6) are equal. The middle section of the inner side wall of both sides of the arc groove (11) is fixedly provided with a guide rail (12) parallel to the inner bottom wall of the arc groove (11). The left and right sides of the drive rod (8) are provided with guide grooves that are adapted to the guide rails (12). The drive rod (8) is slidably connected to the bottom horizontal shaft (1) through the guide rails (12) and the guide grooves.

5. The steel dam gate driven by a hydraulic motor according to claim 4, characterized in that: A groove (13) is fixedly provided on the upper surface of the base plate (6) at the position corresponding to the gate plate (7). When the gate plate (7) moves downward to contact the base plate (6), the lower surface of the gate plate (7) is located in the groove (13).

6. The steel dam gate driven by a hydraulic motor according to claim 5, characterized in that: The inner bottom wall of the trough (13) is provided with a channel (14) of equal length to the gate (7) in the left-right direction. Each gate (7) is fixedly provided with a guide rod (15) at its lower end, and each guide rod (15) is fixedly provided with a baffle (16) of equal length to the gate (7) in the left-right direction at its bottom end.

7. The steel dam gate driven by a hydraulic motor according to claim 6, characterized in that: A receiving cavity (17) is fixedly provided on the lower end face of the base plate (6) at the position corresponding to the baffle (16). The interior of the receiving cavity (17) and the base plate (6) form a sealed chamber. A channel with the same size as the channel (14) is opened on the base plate (6).

8. The steel dam gate driven by a hydraulic motor according to claim 7, characterized in that: A sludge container (18) is fixedly installed on the upper surface of the bottom plate (6) located at the rear side of the tank (13). The upper surface of the sludge container (18) is provided with several parallel circular grooves (19) in the left and right directions. Each circular groove (19) is provided with a sludge removal mechanism. The sludge removal mechanism includes a rotating shaft (20) that is rotatably connected to both opening and closing chambers (3). Several stirring bodies (21) are evenly arranged on the rotating shaft (20). The sludge removal mechanism also includes a driving device (22) located in the opening and closing chamber (3). The driving end of the driving device (22) passes through the opening and closing chamber (3) and is fixedly installed with the rotating shaft (20).

9. The steel dam gate driven by a hydraulic motor according to claim 8, characterized in that: A first contact (23) is fixedly installed on the outer surface of the bottom horizontal shaft (1) located in the opening and closing chamber (3), and a second contact is fixedly installed on the inner wall of the opening and closing chamber (3).

10. The steel dam gate driven by a hydraulic motor according to claim 3, characterized in that: A cover (10) is fixedly installed on the rear side of the gate (7). The drive rod (8) passes through the through hole (9) of the gate (7) and enters the cover (10). A lamp (27) is installed on the upper surface of each opening and closing chamber (3).

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